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https://issues.apache.org/jira/browse/NIFI-1243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Joseph Witt resolved NIFI-1243.
-------------------------------
Resolution: Fixed
> StandardProcessSession throws NPE when it attempts to close
> "currentReadClaimStream"
> ------------------------------------------------------------------------------------
>
> Key: NIFI-1243
> URL: https://issues.apache.org/jira/browse/NIFI-1243
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 0.3.0
> Reporter: Oleg Zhurakousky
> Assignee: Oleg Zhurakousky
> Priority: Minor
> Fix For: 0.4.0
>
>
> The 'currentReadClaimStream' CAN be null in certain situations, so a simple
> null check (as it is done in many other places in the class) before close
> would address the issue.
> Just as an FYI, the stack trace at the time of this bug being discovered is:
> {code}
> 9cd1-4880-9609-2413910ef89c] due to uncaught Exception:
> 2015-12-02 13:18:03,267 WARN [Event-Driven Process Thread-5]
> o.a.n.c.s.EventDrivenSchedulingAgent
> java.lang.NullPointerException: null
> at
> org.apache.nifi.controller.repository.StandardProcessSession.read(StandardProcessSession.java:1810)
> ~[nifi-framework-core-0.4.0-SNAPSHOT.jar:0.4.0-SNAPSHOT]
> at
> org.apache.nifi.controller.repository.StandardProcessSession.read(StandardProcessSession.java:1777)
> ~[nifi-framework-core-0.4.0-SNAPSHOT.jar:0.4.0-SNAPSHOT]
> at
> org.apache.nifi.processors.standard.ExecuteStreamCommand.onTrigger(ExecuteStreamCommand.java:350)
> ~[na:na]
> at
> org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
> ~[nifi-api-0.4.0-SNAPSHOT.jar:0.4.0-SNAPSHOT]
> at
> org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1146)
> ~[nifi-framework-core-0.4.0-SNAPSHOT.jar:0.4.0-SNAPSHOT]
> at
> org.apache.nifi.controller.scheduling.EventDrivenSchedulingAgent$EventDrivenTask.trigger(EventDrivenSchedulingAgent.java:321)
> [nifi-framework-core-0.4.0-SNAPSHOT.jar:0.4.0-SNAPSHOT]
> at
> org.apache.nifi.controller.scheduling.EventDrivenSchedulingAgent$EventDrivenTask.run(EventDrivenSchedulingAgent.java:203)
> [nifi-framework-core-0.4.0-SNAPSHOT.jar:0.4.0-SNAPSHOT]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> [na:1.8.0_60]
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> [na:1.8.0_60]
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> [na:1.8.0_60]
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> [na:1.8.0_60]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [na:1.8.0_60]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [na:1.8.0_60]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_60]
> {code}
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